imac 2021 factory reset can't see apple mouse
My local apple store just returned my machines after doing a clean OS install and full diagnostics. Problem was system powered down (twice) and could not be restarted. Now I'm home with it, plugged it and booted up. But it won't recognize the mouse. Tried turning it on and off a few times but still doesn't acknowledge it, so can't get any further with start up. Any help greatly appreciated. andy